JUKI DDL-5550N Handbook page 80

High-speed, Flat-bed, Top and Bottom Coverstitch Machine
MF-7722
(2-needle, top and bottom coverstitch machine)
MF-7723
(3-needle, top and bottom coverstitch machine)
● Since the seam tension may be easily increased or decreased, the
machine can be used for a broader range of applications.
Seams can be adjusted depending on the application or material by
changing the thread path or adjusting the thread tension controller, to
produce soft and low-tensed seams for inner wear or to produce high-
grade well-tensed seams for outer wear.
● Optimization of the thread take-up mechanism and top covering thread
path route.
The optimized thread take-up mechanism and top covering thread path
route contribute to an increased stability of top coverstitches.
In addition, the machine is capable of performing sewing with a low
tension applied to the thread to offer improved responsiveness to the
sewing thread.
● The machine comes with a variety of features to increase applicable
types of sewing products.
The machine is provided as standard with a great diversity of features,
such as a differential feed adjustment mechanism with a micro-
adjustment mechanism, a feed dog inclination adjustment mechanism,
a micro-lifter and a needle bar stroke conversion mechanism.
The machine can therefore be quickly adjusted to respond to various
materials and processes, thus increasing the applicable types of sewing
products.
SPECIFICATIONS
Model name
Stitch type
Max. sewing speed
Stitch length
Differential-feed ratio
Needle gauge
Needle
Lift of the presser foot
Stitch pitch adjustment
Differential feed adjustment
Lubrication
Lubricating oil
Feed dog inclination adjustment
Micro-lifter
Needle bar stroke converting function
Silicon oil tank for needle tip
and needle thread
Cartridge oil filter
Weight of the machine head
The needle bar stroke has been factory-set to 31mm as standard. 33mm for thicker material also be available by simple adjustment. (max. sewing speed: 5,500rpm)
WHEN YOU PLACE ORDERS
Stitch type
2-needle, Top and Bottom
Coverstitch
3-needle, Top and Bottom
Coverstitch
MF-7722
2-needle top and bottom coverstitch
4.0mm
5mm (with top & bottom coverstitch), 8mm (with bottom coverstitch)
MF77
Code Application Code
For universal U10
22
For collarette C10
23
MF-7723U10B56
6,500rpm
1.2 3.6mm (stitch length can be adjusted to 4.4 mm)
1:0.7 1:2
UY128GAS #9S #14S (standard #10S)
By dial
By micro-adjustment mechanism
Automatic
JUKI Machine Oil 18 (equivalent to ISO VG18)
Provided as standard
Provided as standard
Provided as standard
Provided as standard
Provided as standard
46kg
B
Tonque shape of
Code
throat plate
B type (standard) B
MF-7723U10B56
MF-7723C10B56
MF-7723
3-needle top and bottom coverstitch
4.8, 5.6, 6.4mm
Needle gauge Code
4.0mm 40
4.8mm 48
5.6mm 56
6.4mm 64
For model category (23) (3-needle), needle gauge
category 40 cannot be selected. For application
category "collarette (C10)," needle gauge category
48 cannot be selected.
MF-7722, MF-7723 (September, 2003) 1/2
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